"""
Case Type   : 操作系统类-文件系统故障
Case Name   : switchover时，原主机+新主机注入故障系统文件句柄耗尽
Create At   : 2021/7/30
Owner       : @wan005
Description :
    1、原主机+新主机注入文件句柄耗尽故障
    2、备节点上执行gs_ctl switchover
    3、清理故障，
    4、再次switchover
    5、执行TPCC
    6、检查数据一致性
    7、恢复环境
Expect      :
    1、故障注入成功
    2、switchover失败
    3、清理故障成功
    4、switchover成功
    5、执行TPCC成功
    6、数据一致
    7、恢复环境
History     :
    Modified by @wan005 2021/12/9: 优化故障清理后重启数据库
"""
import time
import unittest

from testcase.utils.ComThread import ComThread
from testcase.utils.Common import Common
from testcase.utils.CommonSH import CommonSH
from testcase.utils.CommonSH import RestartDbCluster
from testcase.utils.Constant import Constant
from testcase.utils.Logger import Logger
from yat.test import Node, macro


class ReliabilityFileSystem(unittest.TestCase):
    nodes = ("PrimaryDbUser", "Standby1DbUser", "Standby2DbUser")

    @RestartDbCluster(*nodes)
    def setUp(self):
        self.log = Logger()
        self.primary_sh = CommonSH(self.nodes[0])
        self.sta1_sh = CommonSH(self.nodes[1])
        self.primary_root_node = Node(node="PrimaryRoot")
        self.sta1_root_node = Node(node="Standby1Root")
        self.sta1_node = Node(node="Standby1DbUser")
        self.constant = Constant()
        self.com = Common()
        self.log.info("setUp-实例化:ok")

        self.log.info("Opengauss_Reliability_OS_File_System_Case030:开始执行")
        self.inject_cmd = f"rfile_deplenish (timeout) values (120)"

    def test_main(self):
        try:
            self.log.info("--step1:原主机+新主机注入句柄耗尽故障;expect:成功")
            self.log.info("--step2:备节点上执行gs_ctl switchover;expect:失败")
            session1 = ComThread(self.sta1_sh.executeGsctl,
                                 args=("switchover",
                                       "switchover completed",
                                       "",
                                       True,))
            session1.setDaemon(True)
            session1.start()
            time.sleep(2)

            self.log.info("注入故障")
            session2 = ComThread(self.com.cfe_inject,
                                 args=(self.sta1_root_node,
                                       self.inject_cmd))
            session2.setDaemon(True)
            session2.start()

            session2.join(130)
            result = session2.get_result()
            self.log.info(result)
            self.assertIn("successful execution", result)

            session1.join(60)
            result = session1.get_result()
            self.log.info(result)
            self.assertIn("Too many open files", result)
            self.assertNotIn("switchover completed", result)

        finally:
            self.log.info("--step3:清除故障;expect:成功")
            time.sleep(120)

            self.log.info("恢复集群环境")
            result = self.primary_sh.executeGsctl("stop",
                                                  "server stopped")
            self.log.info(result)
            result = self.primary_sh.executeGsctl("start",
                                                  "server started")
            self.log.info(result)
            result = self.sta1_sh.executeGsctl("build",
                                               "server started",
                                               "-b full")
            self.log.info(result)

        self.log.info("--step4:故障清理后，备节点上再次执行gs_ctl switchover;expect:成功")
        result = self.sta1_sh.executeGsctl("switchover",
                                           "switchover completed",
                                           get_detail=True)
        self.log.info(result)
        self.assertIn("switchover completed", result)
        self.assertNotIn("Too many open files", result)

        status = self.sta1_sh.exec_refresh_conf()
        self.assertTrue(status)

        db_status = self.primary_sh.getDbClusterStatus("detail")
        self.log.info(db_status)
        self.assertTrue("Degraded" in db_status or "Normal" in db_status)
        self.assertTrue("S Primary" in db_status
                        and "P Standby" in db_status)

        self.log.info("--step5:运行TPCC;expect:成功")
        result = self.com.startTPCC(self.sta1_root_node, macro.TPCC_PATH)
        self.log.info(result)
        self.assertIn(self.constant.TPCC_SUCCESS_MSG, result)

        self.log.info("检查主备是否同步")
        time.sleep(10)
        self.log.info("获取节点数量")
        node_num = self.sta1_sh.get_node_num()
        res = self.sta1_sh.check_location_consistency("primary", node_num)
        self.assertTrue(res)

        self.log.info("--step6:检查数据一致性;expect:成功")
        nodes = (Node(self.nodes[0]), Node(self.nodes[1]),
                 Node(self.nodes[2]))
        flag = self.com.check_data_sample_by_all(r'\d', *nodes)
        self.assertTrue(flag)
        table_dict = self.com.format_sql_result(
            self.sta1_sh.executDbSql(r'\d'))
        table_name = table_dict.get('Name')
        for name in table_name:
            select_sql = f"select count(*) from {name};"
            flag = self.com.check_data_sample_by_all(select_sql, *nodes)
            self.assertTrue(flag)

    def tearDown(self):
        text = "--step7:环境清理;expect:成功"
        self.log.info(text)
        time.sleep(120)
        self.log.info("故障已清理")

        db_status = self.primary_sh.getDbClusterStatus("detail")
        self.log.info(db_status)
        if "S Primary" in db_status or "P Standby" in db_status:
            result = self.primary_sh.executeGsctl("switchover",
                                                  "switchover completed",
                                                  get_detail=True)
            self.log.info(result)
            status = CommonSH(self.nodes[0]).exec_refresh_conf()
            self.log.info(status)
        db_status = self.primary_sh.getDbClusterStatus("detail")
        self.log.info(db_status)
        result = Node(self.nodes[0]).sh("date").result()
        self.assertNotIn("Too many open files", result)
        self.log.info("Opengauss_Reliability_OS_File_System_Case030:执行完成")
